Linux command —-— less

2. Command format:
   

   Less [options] File

4. Command function:

   for easier viewing of files, the less command is very powerful and involves many options and operations commands

6.       -E   leave automatically when the file display ends

   -G   Only the last keyword to search

         -M   show percentages when viewing

         -S   displays contiguous blank lines as one line

7. Common operation commands: (commands to use when you open a file with less)

   /keyword search down "keywords"

   keyword search up "keywords"

   & Keywords only show lines with "keywords"
   

   n Repeat last search (with/and?) Related to use)

   N Repeat the previous search, showing the reverse order of n (with/and?). Related to use)

   u turn up half page

   b turn up one page

   d turn down half a page
   

   space down one page

   g go to the first line

   G go to the last line

   ↑ Scroll up one line
   

   ↓ Scroll down one line

   v Open VI Editor

8. Common examples:

   Example one: Using less to view a file

   Command: less file

   Example two: View the command input history and display it with less paging

   Command: History | Less

   Example three: viewing multiple files simultaneously, such as File1, File2, File3

   Command: less file1 file2 file3

   Note: When viewing multiple files at the same time, you need to switch the file, in the less display page from the previous file switch to the next file input ": N", switch from the current file to the previous file input ": P"

   Example four: Use the less command to view and modify file files

   Command: less file in input v
   

   Note: When you use less to view a file, you need to modify to enter "v" in the less display page, switch vi Editor to edit and modify

   Example five: Display only lines with the keyword "Zhe" in the file files

   Command: less file enter & keyword

   Note: When using the less command to view a file, if you want to display only the line of a keyword, just use less to open the file, enter "& keyword " in it
   

   Example six: Using the less command to view large files can also be used to mark the location of the current check to see, to facilitate reading

   Command: less file enter mafter entering, then enter the name you want to edit such as "a"

   Description: When you view a file with the less command, use the command "m", add a tag, enter "m", and then enter a name to mark, such as "a", and when you want to view the marker position again, enter "a "to return to this tag, and to mark multiple places of the file, just mark the tag with the same name.
   

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Linux command —-— less